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HD. f 2 7 Zi 9 Z mf a f2.5 ,c f/.M JU@ U/. MM m5 JZ; 5 @15M W A fm/enonsf @uiten tetes stnt @fge CHARLES PETERSON AND CHARLES GUNNER, OF SAN FRANCISCO, CALI- FORNIA.

Letters Patent No. 70,354, dated October 29, 1867.

IMPROVED BOAT-DETAGHING TAGKLE.

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.TO ALL WHOM I'l MAY CNCERN:

Be it known that we, CHARLES PErEnsoNand CHARLES GUNNER, both of the city and county of San Fran cisco, and State of California, have invented new and useful improvements in Boat-Detaching Devices; and we do hereby declare the following to be a full and correct description of the same, suiiicient to enable others skilled in the art to which our invention appertains to fully understand and use the same, reference being had to thevaccompanying drawings, which make part of this specification, and in which#- Figure 1 is a plan view of a boat provided with our detaching device.

Figure 2 is a longitudinal vertical of the same in line z x, fig. 1.

Figure 3 is a transverse vertical sectionoi` the same in line yy, fig. 2;v and Fignresfl and 5 are detached views of parts of the detaching device.

Similar letters ofreference indidate corresponding parts inthe several gures.

The nature of our invention consists in a. novel device, operated by a lever froin one of the thwarts of the boat, by means of which the blocks of the fore and the aft tackle, on which the boat hangs, are simultaneously l detached from the boat.

-A, in our drawings, represents the bow, and A' the stern of a boat, to which short rods B .B are pivote d, which, when hanging downward, rest in the loops c, which are bent at right angles to the rods C, of which they form part. These rods are fastened in the keel of the boat', and are, when necessary, asin this case the after one, held near the bottom of the boat by a bolt or bolts, a. Up and down on the rods C slide sleeves or tubes D D', in such a manner that when the rods B B' are resting in the loops e, and the sleeves D are slid up on the rods C, they will also slide over the rods B B,and securely hold them in the loops c. E represents a thwart in the boa-t, which may be entirely slotted, or be provided with a slot in its centre only, in which a drum or roller, e, is pivoted, having a levelgj, attached to it. A rope, 6,'is attached,'^with one end to the leverj, and,

` passing over the roller e, towards the starboard side, is leddownward, and then through an eye-bolt along the bottom of the boat towards the stern, when, after passing through eye-bolts g and L, it is secured by a number of half hitches to the sleeve D, and passes back, through eye-bolts gand z', over the port side of the roller c, and is 'fastened to the leverf. A. second rope, d, is fastened Ato the lever f, passed through eye-bolts secured to the sleeve D', and returned to the' leverf in a similar manner, the number of eye-bolts through which the rope passes being determined as necessity requires. Thus, when the lever is forced over to the starboard side,` the starboard parts of the ropes b d will be slacl'iened while the port parts are pulled, drawing the sleeves D D' respectively downward from over the rods BB', leaving them free to be raised out of the loops. When the lever is then pulled over to port, the rods B B being placed down into the loops e, the port ropes are slacked .and the starboard parts pulled, which draws the sleeves D D' up on the rods C and over the rods B B'. In fig. 2 the'boat is'represented as hanging by the tackles from the davits, the hooks of the blocks beingI slipped over the rods B B', which lie in the loops c, and are held by the sleeves D D', the vlever f being to port. The whole boats crew, or but one man, as the case may be, being seated in the boat, the same can now b e detached instantaneously by simply moving the lever from port to'starboard.

In detachingboats when a high sea is running, it is especially necessary to detach them at the moment when the water has touched the boat, rising from below and elevating it alittle before receding; for if it should be detached before the water has reached it, itsy weight, and the force of its fall acting against the force of the rising wave, would in a great many cases stave the bottom of the boat in. VAs soon as the man in charge of detaching the boatfeels the water touching the boat, he throws the lever from starboard to port, thereby pulling the sleeves D D' down from over the rodsB B', the boat-tackles being' at the same time slack, and their hooks not pulling on the rods B B'. As soon as thc wave recedes, taking with it the boat, the tackles are tantened and lift the rods B B', the hooks of the tackle-blocks slip` from over them, and the boat is free.

In many of the numerous boat-detaching devices, their eiciency is destroyed by either great bulk or such position that the utmost care is required by the boats crew not to accidentally interfere with their operation Insuch moments ofA danger, when aboat is detached in a high sea, each man must be fully alive to his duty, as much depends on his presence of mind and skill in' handling his oar. His attention ought not, therefore, to

be divided by the possibility of his accidentally entangling the detaching device.. l Our device being placed on the bottom of the boat, under the bottom boards, is entirely out of the way, enabling, the men to move their feet about without danger of interfering with the detachug device. The, hooks of the tackles may either be moused, or may be formed cfa ring, as may be found best. The lroller e may be pivoted in a slot in any ofthe thrv'arts, or in a board secured inthe boat for that especial purpose, the lever f, when either to starboard or port, lying in notches k in the thwart or board, and being heldv down by a cross-bolt or any other suitable means. Instead of the eye-bolts, and tc facilitate the operating of the ropes, We mayuse clamps provided with rollers, but we do not wish to restrict ourselves to any particular' manner of guiding the ropes. We do not confine ourselves to the use of ropes, but may use chains, metal rods, or any other suitable mea-ns.

Having tllus described our invention, what we claim as new therein, and desire to secure by Letters Patent, is

l. The rods C, attached to the .bottom of a boat, thoirupper ends being free, and provided ivith loops c substantially as and for the purposes described.

2. Thesleeves D D on the rods C, substantially as and for the purposes described.

3. The rods BBQ'pivoted as described, in combination with the rods C and sleevesl DD', and vropes I; and d.

4. The roller or drum e, pivoted in a slot in a thwart or cross-board, and provided with a lever, f, substantially as and for the purposes described.

5. The detaching device, consisting of the rods B B and C, sleeves D D', ropes b and d, and roller or drum e, provided' with a. lever, f, andpivoted in a slotted thwart or board, substantially as described.

CHARLES PETERSON, CHARLES GUNNER.

Witnesses:

ALEX. A. C. KLAUCKE,

M. C. ANDERSON. 

